Petr Penzin
Beaverton, Oregon, United States
Summary
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RockstarPetr Penzin is a compiler engineer with 12 years of experience specializing in LLVM frontends and code generation for native, managed, JavaScript, and WebAssembly targets. He brings deep HPC expertise in heterogeneous compute and distributed parallel systems, and practical networking experience including P4 and RDMA. A longtime contributor to open-source JavaScript engines (notably ChakraCore) and an active participant in W3C WebAssembly standardization—co-chairing the SIMD subgroup—he blends standards work with hands-on compiler and runtime implementation. His background spans RISC-V compiler work, Fortran/HPC toolchains, and security-conscious code generation, reflecting a rare mix of low-level systems, cryptography interest, and web/runtime interoperability. Based in Beaverton, Oregon, he often operates at the intersection of research, standardization, and production compiler engineering.
12 years of coding experience
Github Skills (12)
javascript10
blazor-webassembly10
c-language10
chakracore10
cmake10
webassembly10
cpp10
cprogramming-language10
javascript-engine10
chakra10
icu9
build-system9
Programming languages (13)
Github contributions (5)
chakra-core/ChakraCore
Apr 2020 - Dec 2022
ChakraCore is an open source Javascript engine with a C API.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:136 reviews, 82 commits, 108 PRs in 2 years 8 months
Contributions summary:Petr primarily contributed to the ChakraCore JavaScript engine, making changes related to build processes and WebAssembly. Their work involved fixing CMake build types, re-enabling warnings, and embedding ICU via CMake. They also updated Wasm SIMD opcodes, and implemented various changes in the build system and related files.
javascript-enginechakracoreruntimemicrosoftc-api
ppenzin/neko
Jul 2015 - Mar 2018
Contributions:12 PRs, 66 pushes, 6 branches in 2 years 8 months
rustvirtual-machineneko
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